As it relates to skin, peptides are naturally occurring proteins that signal cell proliferation and repair. The cosmetic dermatological companies are producing tons of products with "peptides". Consumers want scientific based results with bioactive and potent ingredients. When properly formulated, the products should result in diminished lines,wrinkles,smoother skin texture, reduced redness and reduced skin discoloration.  Peptide concentration should be supported by clinical studies and product specific studies.  Check for yourself if the products that you are buying and using are clinically proven.  Rodan +Fields are Stanford trained cosmetic dermatologist with 50 years of combined clinical experience in the field. Their products are 3rd party tested by independent dermatologist. The results are published for each product regimen they formulate.  Stay tuned for more information on anti-aging effects of peptides.